  Bill in Houston Yep! 06-22-2007, 12:27 PM
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06-21-2007, 02:13 PM
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#1
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Registered Member
Join Date: Mar 2007
Posts: 1,138
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You are right about the conservation of energy. It takes a certain amount of energy to get a vehicle from point a to point b at a given rate. Sooo, if you just set the cruise, your engine will run in a band of 20% to 30% efficiency as you go up and down hills and such. BUT if you did some kind of perfect P&G, you could get all of your energy at maybe 35% efficiency.
You have to expend the same amount of energy, it's just whether you get it all at 25% efficiency or 35% efficiency.
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